First-principles Study on Interface of Reduced Graphene Oxide Reinforced Aluminum Matrix Composites
Source abstract
Abstract
An "aluminum/graphene oxide/aluminum (Al/GO/Al)" interface model with different carbon/oxygen ratio or with different defects was established. Effects of oxygen-containing functional groups and different defects on the interface of reduced graphene oxide/aluminum composites was studied using first principle method based on density functional theory (DFT). The results show that the epoxy group is better than carbon atom to produce obvious charge interaction with aluminum atom in the interface model of Al/GO/Al. The net charge of oxygen atom is -0.98 e while aluminum atom is 0.46 e, which is conducive to the interfacial bonding between reduced graphene oxide (RGO) and aluminum matrix in composites. When the defects exists, the net charge of carbon atoms at the defects in the Al/GO/Al interface model is in the range of -0.05 e to -0.38 e. Interaction between epoxy group and carbon atoms is weak, while interaction between epoxy group and aluminum atoms is significantly intensified. The existence of epoxy group can inhibit reaction between carbon atom and aluminum atom in the vacancy defects, and protect integrity of carbon
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Research context
OpenAlex topics: Aluminum Alloys Composites Properties · Additive Manufacturing and 3D Printing Technologies · Advanced ceramic materials synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (31)
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